diff options
| -rw-r--r-- | include/llvm/TargetTransformInfo.h | 3 | ||||
| -rw-r--r-- | lib/Analysis/CostModel.cpp | 18 | ||||
| -rw-r--r-- | test/Analysis/CostModel/X86/loop_v2.ll | 43 |
3 files changed, 63 insertions, 1 deletions
diff --git a/include/llvm/TargetTransformInfo.h b/include/llvm/TargetTransformInfo.h index c65ef17..94db490 100644 --- a/include/llvm/TargetTransformInfo.h +++ b/include/llvm/TargetTransformInfo.h @@ -179,8 +179,9 @@ public: } /// Returns the expected cost of vector Insert and Extract. + /// Use -1 to indicate that there is no information on the index value. virtual unsigned getVectorInstrCost(unsigned Opcode, Type *Val, - unsigned Index = 0) const { + unsigned Index = -1) const { return 1; } diff --git a/lib/Analysis/CostModel.cpp b/lib/Analysis/CostModel.cpp index 142d287..5adbf45 100644 --- a/lib/Analysis/CostModel.cpp +++ b/lib/Analysis/CostModel.cpp @@ -150,6 +150,24 @@ unsigned CostModelAnalysis::getInstructionCost(Instruction *I) const { Type *SrcTy = I->getOperand(0)->getType(); return VTTI->getCastInstrCost(I->getOpcode(), I->getType(), SrcTy); } + case Instruction::ExtractElement: { + ExtractElementInst * EEI = cast<ExtractElementInst>(I); + ConstantInt *CI = dyn_cast<ConstantInt>(I->getOperand(1)); + unsigned Idx = -1; + if (CI) + Idx = CI->getZExtValue(); + return VTTI->getVectorInstrCost(I->getOpcode(), + EEI->getOperand(0)->getType(), Idx); + } + case Instruction::InsertElement: { + InsertElementInst * IE = cast<InsertElementInst>(I); + ConstantInt *CI = dyn_cast<ConstantInt>(IE->getOperand(2)); + unsigned Idx = -1; + if (CI) + Idx = CI->getZExtValue(); + return VTTI->getVectorInstrCost(I->getOpcode(), + IE->getType(), Idx); + } default: // We don't have any information on this instruction. return -1; diff --git a/test/Analysis/CostModel/X86/loop_v2.ll b/test/Analysis/CostModel/X86/loop_v2.ll new file mode 100644 index 0000000..260a606 --- /dev/null +++ b/test/Analysis/CostModel/X86/loop_v2.ll @@ -0,0 +1,43 @@ +; RUN: opt < %s -cost-model -analyze -mtriple=x86_64-apple-macosx10.8.0 -mcpu=corei7-avx | FileCheck %s + +target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128" +target triple = "x86_64-apple-macosx10.9.0" + +define i32 @foo(i32* nocapture %A) nounwind uwtable readonly ssp { +vector.ph: + br label %vector.body + +vector.body: ; preds = %vector.body, %vector.ph + %index = phi i64 [ 0, %vector.ph ], [ %index.next, %vector.body ] + %vec.phi = phi <2 x i32> [ zeroinitializer, %vector.ph ], [ %12, %vector.body ] + %0 = getelementptr inbounds i32* %A, i64 %index + %1 = bitcast i32* %0 to <2 x i32>* + %2 = load <2 x i32>* %1, align 4 + %3 = sext <2 x i32> %2 to <2 x i64> + ;CHECK: cost of 1 {{.*}} extract + %4 = extractelement <2 x i64> %3, i32 0 + %5 = getelementptr inbounds i32* %A, i64 %4 + ;CHECK: cost of 1 {{.*}} extract + %6 = extractelement <2 x i64> %3, i32 1 + %7 = getelementptr inbounds i32* %A, i64 %6 + %8 = load i32* %5, align 4, !tbaa !0 + ;CHECK: cost of 1 {{.*}} insert + %9 = insertelement <2 x i32> undef, i32 %8, i32 0 + %10 = load i32* %7, align 4, !tbaa !0 + ;CHECK: cost of 1 {{.*}} insert + %11 = insertelement <2 x i32> %9, i32 %10, i32 1 + %12 = add nsw <2 x i32> %11, %vec.phi + %index.next = add i64 %index, 2 + %13 = icmp eq i64 %index.next, 192 + br i1 %13, label %for.end, label %vector.body + +for.end: ; preds = %vector.body + %14 = extractelement <2 x i32> %12, i32 0 + %15 = extractelement <2 x i32> %12, i32 1 + %16 = add i32 %14, %15 + ret i32 %16 +} + +!0 = metadata !{metadata !"int", metadata !1} +!1 = metadata !{metadata !"omnipotent char", metadata !2} +!2 = metadata !{metadata !"Simple C/C++ TBAA"} |